Good Day, All.
I have adopted the advised solution - realignment to "Database Credential, from Windows Credential" - this had solved the initial problem, as per the other users.
However, due to my lack of experience in Power BI, I have unearthed another "gremlin" - see the above picture.
There is reference to:"The name provided is not a properly formed account name"
Can someone help me, please...???!
Thanks in advance